Adjustable storage bin



FIG. 1 is a perspective view of an adjustable storage bin;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a left elevation view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings depict portions of the adjustable storage bin that form no part of the claimed design. 

CLAIM The ornamental design for an adjustable storage bin, as shown and described. 